#------------------------------------------------------------------------------ #$Date: 2009-11-18 16:56:34 +0200 (Wed, 18 Nov 2009) $ #$Revision: 858 $ #$URL: file:///home/coder/svn-repositories/cod/cif/9/9001251.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_9001251 loop_ _publ_author_name 'Moore P B' 'Sen Gupta P K' 'Le Page Y' _publ_section_title ; Magnetoplumbite, PbFe12O19: Refinement and lone-pair splitting Note: Symmetry constraints on U(i,j) for Fe5, O4 and O5 were incorrect, and likely were refined wrong. They have been replaced with their isotropic equivalents. ; _journal_name_full 'American Mineralogist' _journal_page_first 1186 _journal_page_last 1194 _journal_volume 74 _journal_year 1989 _chemical_formula_sum 'Fe12 O19 Pb1.002' _[local]_cod_chemical_formula_sum_orig 'Pb1.002 Fe12 O19' _chemical_name_mineral Magnetoplumbite _symmetry_space_group_name_H-M 'P 63/m m c' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_length_a 5.873 _cell_length_b 5.873 _cell_length_c 23.007 _cell_volume 687.243 loop_ _symmetry_equiv_pos_as_xyz x,y,z -x,-x+y,1/2+z x,x-y,1/2-z -x+y,-x,1/2-z x-y,x,1/2+z -y,-x,z y,x,-z y,-x+y,-z -y,x-y,z x-y,-y,1/2+z -x+y,y,1/2-z x,y,1/2-z -x,-y,1/2+z x,x-y,z -x,-x+y,-z x-y,x,-z -x+y,-x,z y,x,1/2+z -y,-x,1/2-z -y,x-y,1/2-z y,-x+y,1/2+z -x+y,y,z x-y,-y,-z -x,-y,-z loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Pb 0.72000 0.38400 0.25000 0.16700 ? Fe1 0.00000 0.00000 0.00000 1.00000 ? Fe2 0.00000 0.00000 0.25590 0.50000 ? Fe3 0.33333 0.66667 0.02733 1.00000 ? Fe4 0.33333 0.66667 0.19019 1.00000 ? Fe5 0.16870 -0.16870 -0.10881 1.00000 0.00595 O1 0.00000 0.00000 0.15110 1.00000 ? O2 0.33333 0.66667 -0.05460 1.00000 ? O3 0.18390 -0.18390 0.25000 1.00000 0.01279 O4 0.15650 -0.15650 0.05240 1.00000 0.00595 O5 0.50350 -0.50350 0.14990 1.00000 0.00646 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Pb 0.02180 0.01150 0.02290 0.00680 0.00000 0.00000 Fe1 0.00700 0.00700 0.00450 0.00350 0.00000 0.00000 Fe2 0.01040 0.01040 0.00260 0.00520 0.00000 0.00000 Fe3 0.00600 0.00600 0.00380 0.00300 0.00000 0.00000 Fe4 0.00760 0.00760 0.00430 0.00380 0.00000 0.00000 O1 0.01130 0.01130 0.00150 0.00565 0.00000 0.00000 O2 0.00560 0.00560 0.00520 0.00280 0.00000 0.00000